Key Features & Specifications
1. Electrical Parameters
Rated Supply Voltage: 24–240V AC/DC (wide-range input)

Measurement Inputs:

Voltage (U): 3-phase, 0–500V AC (L-N or L-L)

Current (I): Via external current transformers (CTs) (e.g., 5A or 1A secondary)

Frequency Range: 45–65Hz

2. Protection & Monitoring Functions
Over/Under Voltage Protection (adjustable thresholds)

Over/Under Current Protection (configurable)

Phase Sequence & Asymmetry Detection

Power & Energy Monitoring (kW, kWh, PF, etc.)

Trip Delay Settings (adjustable)

3. Outputs & Control
Relay Outputs: 2x SPDT changeover relays (5A, 250V AC)

Analog Output: Optional 0–20mA / 4–20mA (for SCADA/DCS integration)

Digital Inputs: For external control signals

4. Display & Interface
LCD Display: Backlit for real-time parameter visualization

Navigation Buttons: For local configuration

Communication (Optional):

RS-485 Modbus RTU (for remote monitoring)

5. Mechanical & Environmental
Mounting: DIN rail (35mm)

Protection Class: IP20 (enclosure)

Operating Temperature: -25°C to +55°C

Standards Compliance:

IEC 60255 (protection relays)

UL 508 (industrial control equipment)

Typical Applications
✔ Motor & Pump Protection (phase loss, overload)
✔ Generator & UPS Monitoring
✔ Energy Management Systems
✔ HVAC & Building Power Control